CVE-2026-119134
MEDIUM
MEDIUM
Priority: 0.00
BB Relevance:
49/100
Published: 2026-10-29
Modified: 2026-10-29
First seen: 2026-10-29
Status: active
Attack Surface
Low Complexity
No Auth
No Interaction
CVSS Vector Breakdown
AV:
Local
AC:
Low
PR:
None
UI:
None
AT:
None
VC:
None
VI:
None
VA:
High
Description
Wasmtime before 36.0.18, 37.0.0 before 48.0.6, and 49.0.0 before 49.0.3 caps component-model resource handle tables only per component instance and does not charge handle allocations to any ResourceLimiter or StoreLimits. A malicious guest can repeatedly call resource.new and instantiate sub-components to exceed the per-instance cap many times over, causing unbounded host memory growth.
Weakness Classification (1)
Affected Software (4)
| Vendor | Product | Version |
|---|---|---|
| bytecodealliance | wasmtime | 0 < 36.0.18 |
| bytecodealliance | wasmtime | 0 < 36.0.18 |
| bytecodealliance | wasmtime | 37.0.0 < 48.0.6 |
| bytecodealliance | wasmtime | 49.0.0 < 49.0.3 |